Contribution to the knowledge of Acaenitinae (Hymenoptera: Ichneumonidae) from Vietnam, with descriptions of two new species

Two new species Ishigakia curvicaudicula Pham & Long sp. nov., and Yezoceryx comaensis Pham sp. nov. are described and illustrated. An updated key to 15 known species of Ishigakia of the world fauna is also provided. The new species Yezoceryx comaensis Pham sp. nov. is inserted in a key to the Vietnamese species provided by Pham et al. (2017). In addition, Siphimedia nigriscuta Sheng and Sun, 2010 is recorded for the first time from Vietnam. www.zoobank.org/urn:lsid:zoobank.org:pub:8C18E41E-DB85-4FEC-9361-FD0D520056AF [Display omitted] •Ishigakia curvicaudicula Pham & Long sp. nov. is described and illustrated.•An updated key to the world 15 species of Ishigakia is provided.•Yezoceryx comaensis Pham sp. nov. is described and illustrated.•Siphimedia nigriscutaSheng and Sun, 2010 is recorded from Vietnam for the first time.